68 THE CANADIAN ENTOMOLOGIST. 



received in the apical angle of the first submarginal cell ; second 

 abscissa of radius twice as long as first ; second submarginal cell twice as 

 wide at base as at apex. Legs pale brownish-yellow, the apex of pos- 

 terior tibiae above and the basal 3 or 4 joints of tarsi more or less dusky. 

 Abdomen oblong oval, the first segment above and the black median spot 

 on the second, rugulose ; rest of the surface granulated or shagreened ; 

 the first segment is the longest ; the second and third about equal, the 

 suture between being distinct, crenated ; the following subequal. the 

 fourth being one-third shorter than the third. 



Hab. — Morgantown, W. Va. 



Bred from Lixus scrobicol/is, living in Ambrosia trifida. 



(2) B. mfomarginatus, sp. n. 



$ — Length, 2 mm.; ovipositor, 0.5 mm. Polished black; orbits, a 

 line extending from base of eye and along the clypeus, yellow ; palpi 

 black ; legs black, beneath pale brownish ; lateral margins of the abdo- 

 men and the venter reddish-yellow; antennae 24-jointed, black; wings 

 fuliginous ; the second abscissa of radius one-half longer than the first ; 

 the second submarginal cell not narrowed at apex. 



Hab. — Morgantown, W. Va. 



Comes nearest to B. phycidis Riley, but with darker wings and dif- 

 ferent coloured legs. 



Subfamily Exothecin/e. 



Rhysipolis. Forster. 



(3) ? R. biformis, sp. n. Rhysipolis biformis, Ashm., MS., Ins. Life, IV., 



P- 257- 

 $ — Length, 3.5 mm.; ovipositor a little longer than the abdomen. 

 Head and thorax black, pubescent ; abdomen ferruginous ; anterior coxae, 

 all trochanters, except slightly on the upper surface, annulus at base of 

 all tibiae and all tarsi, honey-yellow or pale ferruginous ; middle and an- 

 terior coxae and all femora black ; mesopleura reddish or piceous. 

 Head quadrate, above smooth, polished, with a delicate occipital margin ; 

 face finely punctate with a sparse, rather long, whitish pubescence ; man- 

 dibles black ; palpi piceous. Thorax finely shagreened, the parapsidal 

 furrows obsolete posteriorly but sharply defined anteriorly, the middle 

 lobe just in front of scutellum depressed, rugulose with a slight median 

 keel ; meso-pleura smooth and pale or piceous at the middle, with a slight 

 longitudinal sulcus ; scutellum smooth, with a crenate furrow across the 

 base ; meta-thorax rugose, with a delicate median carina down the centre 



